The 2011 National Survey of Speeding Attitudes and Behaviour (NSSAB) is the third in a series of surveys on speeding that have provided data to help further the understanding of driving behaviour and to contribute to the development of countermeasures and interventions to reduce speeding. Like the previous studies, this survey yields national estimates of behaviour and attitudes toward speeding in the United States. The present study differs from the earlier studies in that it developed and used a driver typology based on the pattern of responses across six speeding behaviour questions. Cluster analysis identified three distinct groups of drivers with similar overall behavioural tendencies and, among those categorized, 30% are non-speeders, 40% are sometime speeders, and 30% are speeders. Driver type is a powerful predictor of norms and attitudes toward speeding behaviour, speeding countermeasures, experience with sanctions and crash experience. This report details the findings from the 2011 NSSAB, examining the data using the above mentioned driver typology as well as standard demographics. In the final chapter, results from the current study are compared to those of the 2002 NSSAB and the 1997 NSSAB. Using data from over the last 14 years allows us to identify trends in speeding and driving behaviour, especially as new technologies such as cell phones become more pervasive in the driving community. (Author/publisher)
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